Patents Assigned to Jujo Paper Co., Ltd.
  • Patent number: 4889927
    Abstract: This invention concerns a process for producing phenolic substances with beneficial biological activities in a high yield, which comprises: subjecting a glycose of which an OH group at the 1 position is substituted for a halogen atom and of which other groups are substituted for acyl groups, and a phenol of which at least one of the ortho-positions in regard to phenolic OH groups is substituted to reaction with an alkali metal hydride in dimethylsulfoxide or dimethylformamide in the presence of or non-presence of a quat-ammonium salt and then hydrolyzing said acyl groups with an alkaline substance.
    Type: Grant
    Filed: March 3, 1988
    Date of Patent: December 26, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Koji Murakami, Fumiaki Nakatsubo, Yoshiaki Katsura, Motoo Matukura
  • Patent number: 4869047
    Abstract: A paper container filling a liquid content which comprises an upper air gap formed therein for sealing solely carbon dioxide or nitrogen gas and carbon dioxide. Thus, a recess is produced on the paper container by utilizing a small pressure reduction in the container generated as a result of carbon dioxide dissolved in the liquid content, and the recess is used as a criterion of deciding the presence of gas substitution, presence of pinhole of the container and the propriety of sealing of the container only by the recess. This container can be fully inspected by the naked eye. Further, a method of filling gas and apparatus for filling the gas in a paper container formed of a synthetic resin layer of aluminum foil or polyethylene mainly with paper by eliminating the abovementioned disadvantages and performing gas substitution merely by adding a simple unit on a filling machine, thereby holding taste, odor and nutrient components of the container contents for 4 or longer months.
    Type: Grant
    Filed: August 14, 1987
    Date of Patent: September 26, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Youichi Nishiguchi, Kazuo Sasaki
  • Patent number: 4868151
    Abstract: A heat-sensitive recording material has a support and a color-developing layer which comprises a particular sulfone as an organic color-developing agent and a particular fluorene-type leuco dyestuff as a colorless basic chromogenic dyestuff. This heat-sensitive recording material is superior in light resistance, weather resistance, oil resistance and optical readability in the near infrared region.
    Type: Grant
    Filed: June 10, 1987
    Date of Patent: September 19, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Toshimi Satake, Toshiaki Minami, Tomoaki Nagai, Fumio Fujimura
  • Patent number: 4867342
    Abstract: An automatic carton feeding device for a liquid filling machine according to the present invention comprises a carton supply basket assembly divided into an upper and lower basket. The upper basket, which follows the lower basket connected to the liquid filling machine, is installed so as to take an upright and a tumbled position. The lower basket is provided with a receiving plate to receive cartons descending to the lower basket in an upright position of the upper basket. The receiving plate is supported so as to make a vertical motion and lateral retraction using an elevating mechanism.
    Type: Grant
    Filed: June 30, 1987
    Date of Patent: September 19, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Mitsuru Muramatsu, Ryuichiro Tominaga
  • Patent number: 4861749
    Abstract: A heat-sensitive recording material comprises a support and a color-developing layer having a particular saturated higher fatty acid iron salt, a particular polyvalent phenolic derivative and a colorless leuco dyestuff.The heat-sensitive recording material of the present invention provides both a superior image contrast and a high stability of developed image against oily substances and solvents.
    Type: Grant
    Filed: June 22, 1988
    Date of Patent: August 29, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Toshimi Satake, Tomoaki Nagai, Fumio Fujimura
  • Patent number: 4853363
    Abstract: A heat-sensitive recording material has a substrate and a color-developing layer which comprises a near infrared-absorbing fluorantype leuco dye.This heat-sensitive recording material provides a superior optical readability in near infrared region.
    Type: Grant
    Filed: April 6, 1988
    Date of Patent: August 1, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Toshimi Satake, Toshiaki Minami, Tomoaki Nagai, Fumio Fujimura
  • Patent number: 4853361
    Abstract: A heat- and light-sensitive recording material has a substrate and a color-forming layer which comprises a particular fluoran-type leuco dye.This heat- and light-sensitive recording material provides a clear image a superior contamination-resistance and an excellent readability in visible and near infrared range.
    Type: Grant
    Filed: April 14, 1988
    Date of Patent: August 1, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Toshimi Satake, Toshiaki Minami, Tomoaki Nagai, Fumio Fujimura
  • Patent number: 4853362
    Abstract: A heat-sensitive recording material has a support and a color-developing layer which comprises both as a colorless basic chromogenic dye at least one of a particular fluorane-type leuco dye and a particular divinyl compound and as a stabilizer a particular halogen-substituted zinc benzoate derivative.This heat-sensitive recording material is superior in light resistance, weather resistance, oil resistance and optical readability in the near infrared region.
    Type: Grant
    Filed: August 19, 1988
    Date of Patent: August 1, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Toshimi Satake, Tadakazu Fukuchi, Toshiaki Minami, Tomoaki Nagai, Toshio Kaneko, Fumio Fujimura
  • Patent number: 4849396
    Abstract: A heat-sensitive recording material including a support and a color-developing layer having both an electron donor and a metal double salt or higher fatty acid having 16-35 carbon atoms as an electron acceptor. The heat-sensitive recording material is superior is dispersibility, image contrast, oil resistance, solvent resistance and optical readability in the near infrared region.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: July 18, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Toshimi Satake, Toshiaki Minami, Tomoaki Nagai, Fumio Fujimura
  • Patent number: 4840011
    Abstract: Apparatus provided with lateral cutters to effect lateral cuts at the upper and lower parts of a tape applied on to the flaps at both ends of a carton case. The cutters are installed on a mechanism for extending and retracting the cutters relative to the end face corners at both ends of the case. A cylinder is also provided for pushing and receiving cartons to prevent superposed cartons from tumbling as they are withdrawn from the case.
    Type: Grant
    Filed: September 28, 1987
    Date of Patent: June 20, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Mitsuru Muramatsu, Ryuichiro Tominaga
  • Patent number: 4835134
    Abstract: The color-developing sheet for pressure-sensitive recording sheets comprises a color-developing agent containing a phenolic polymer in combination with a polyvalent metal salt of carboxylated terpenephenol resin and/or a reaction product of carboxylated terpenephenol resin, aromatic carboxylic acid and polyvalent metal compound.This color-developing sheet provides superior plasticizer resistance and less deterioration of a color-developing ability with the lapse of time.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: May 30, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Hiroaki Umeda, Mamoru Suzuki, Akira Hasegawa, Kunio Hata
  • Patent number: 4835135
    Abstract: The color-developing sheet for pressure-sensitive recording sheet contains a color-developing agent comprising an inorganic solid acid in combination with a polyvalent metal salt of carboxylated terpenephenol resin and/or a reaction product of carboxylated terpenephenol resin, aromatic carboxylic acid and polyvalent metal compound.This color-developing sheet is superior in both sunlight fading resistance and water resistance.
    Type: Grant
    Filed: December 18, 1987
    Date of Patent: May 30, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Hiroaki Umeda, Mamoru Suzuki, Akira Hasegawa, Kunio Hata
  • Patent number: 4833119
    Abstract: The color-developing sheet for pressure-sensitive recording sheets contains a color-developing agent comprising a polyvalent metal salt of aromatic carboxylic acid in combination with a polyvalent metal salt of carboxylated terpenephenol resin and/or a reaction product of carboxylated terpenephenol resin, aromatic carboxylic acid and polyvalent metal compound.This color-developing sheet provides a higher color-developing rate and a superior color-developing intensity.
    Type: Grant
    Filed: December 29, 1987
    Date of Patent: May 23, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Hiroaki Umeda, Mamoru Suzuki, Akira Hasegawa, Kunio Hata
  • Patent number: 4831264
    Abstract: A method for measuring the concentration of adhesive on the surface of a coating layer which has the steps of irradiating the surface of the coating layer with an ultraviolet ray of the highest peak absorption wavelength of the adhesive, ultraviolet ray of shorter wavelength and ultraviolet ray of longer wavelength, photoelectrically converting the reflected rays and further comparing to calculate them. Thus, this method can be used to measure the concentration of adhesive on the surface of a coating layer and the flat surface distribution of the adhesive by fundamentally measuring with ultraviolet rays. The method is of high reliability despite the presence of gloss or the like.
    Type: Grant
    Filed: July 31, 1987
    Date of Patent: May 16, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventor: Hideki Fujiwara
  • Patent number: 4830911
    Abstract: This invention relates to a recording sheet for ink jet printers which gives an image by the use of an aqueous ink containing a water-soluble dye, coated or impregnated with either of or a mixture of two kinds of water-soluble polymers: one whose polymeric unit is alkylquaternaryammonium (meth)acrylate and the other whose polymer unit is alkylquaternaryammonium (meth)acrylamide, said water-soluble polymers containing not less than 50 mol % of a monomer represented by the following formula (1), ##STR1## where R represents hydrogen or methyl group; n is an integer from 1 to 3 inclusive; R.sub.1, R.sub.2 and R.sub.3 represent hydrogen or the same or different aliphatic alkyl group with 1 to 4 carbon atoms; X.sup..crclbar. represents an anion such as halogen ion, sulfate ion, alkylsulfate ion, alkyl- or aryl-sulfonate ion and acetate ion and Y represents oxygen or imino group.
    Type: Grant
    Filed: March 10, 1987
    Date of Patent: May 16, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Yutaka Kojima, Takashi Omori
  • Patent number: 4819861
    Abstract: A paper container for containing liquid such as milk and juice is disclosed. The container is formed of a thick paper provided thereon with vertical and horizontal folding lines intersecting each other at right angles. The intersecting portions of the folding lines are such formed as to be different in configurations for a predetermined length. In this way, splits and pin holes can be prevented from occurring when the thick paper is folded along the grooves to build up a container.
    Type: Grant
    Filed: February 2, 1987
    Date of Patent: April 11, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventor: Kiichiro Nagata
  • Patent number: 4806521
    Abstract: The color-developing agent for pressure-sensitive recording sheet comprises a reaction product of carboxylated terpenephenol resin, aromatic carboxylic acid and polyvalent metal compound. The color-developing sheet containing the above color-developing agent provides an excellent color-developing rate and an improved light fastness.
    Type: Grant
    Filed: March 17, 1988
    Date of Patent: February 21, 1989
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Hiroaki Umeda, Mamoru Suzuki, Akira Hasegawa, Kunio Hata
  • Patent number: 4801037
    Abstract: As opening/closing device to be provided at a mouth of a container such as a paper container, a bottle, a can, etc., in which a lid is provided via a hinge on the inside of a cylindrical pouring mouth made of synthetic resin and a gap space is formed between the pouring mouth and the lid. A metallic film consisting of a metal foil having synthetic resin layers coated on its both surfaces is bonded so as to straddle both the upper surface of the lid and the upper surface of the pouring mouth. Opening of the lid is effected by peeling of the metallic film, and upon closing the lid, the metallic film is pressed from its outer surface so that it may be stuffed in the gap space between the lid and the pouring mouth. Upon making the opening/closing device, an annular protrusion is formed on the top end surface of the pouring mouth, the metallic film is bonded to this annular protrusion and the lid so that the metallic film may be easily peeled off.
    Type: Grant
    Filed: November 30, 1987
    Date of Patent: January 31, 1989
    Assignees: Mikasa Sangyo Kabushiki Kaisha, Jujo Paper Co., Ltd.
    Inventors: Mitsuharu Hayashida, Kazuo Sasaki, Nobusige Yasui, Eiji Takahashi
  • Patent number: 4784692
    Abstract: The color-developing agent for pressure-sensitive recording sheet comprises a reaction product of carboxylated terpenephenol resin, aromatic carboxylic acid and polyvalent metal compound. The color-developing sheet containing the above color-developing agent provides an excellent color-developing rate and an improved light fastness.
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: November 15, 1988
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Hiroaki Umeda, Mamoru Suzuki, Akira Hasegawa, Kunio Hata
  • Patent number: 4759797
    Abstract: The color-developing agent for pressure-sensitive recording sheet comprises the polyvalent-metal salt of carboxylated terpenephenol resin. The color-developing sheet containing the above color-developing agent provides excellent yellowing-resistance, superior color-developing ability and improved fastness of the colored image.
    Type: Grant
    Filed: April 30, 1987
    Date of Patent: July 26, 1988
    Assignee: Jujo Paper Co., Ltd.
    Inventors: Hiroaki Umeda, Mamoru Suzuki, Akira Hasegawa, Kunio Hata